Mechanically and Thermally Enhanced 3D-Printed Photocurable Polymer Nanocomposites Containing Functionalized Chitin Nanowhiskers by Stereolithography

Maalihan, Reymark D.; Chen, Qiyi; Tamura, Hiroshi; Sta. Agueda, Joseph H.; Pajarito, Bryan B.; Caldona, Eugene B.; Advincula, Rigoberto C.

doi:10.1021/acsapm.1c01816

Mechanically and Thermally Enhanced 3D-Printed Photocurable Polymer Nanocomposites Containing Functionalized Chitin Nanowhiskers by Stereolithography

Journal Article · Tue Mar 29 00:00:00 EDT 2022 · ACS Applied Polymer Materials

DOI:https://doi.org/10.1021/acsapm.1c01816· OSTI ID:1887654

Maalihan, Reymark D. ^[1]; Chen, Qiyi ^[2]; Tamura, Hiroshi ^[3]; Sta. Agueda, Joseph H. ^[4]; Pajarito, Bryan B. ^[5]; ^[6]; ^[7]

Batangas State University (Philippines); Case Western Reserve Univ., Cleveland, OH (United States); University of the Philippines (Philippines)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences
Kansai University (Japan)
Case Western Reserve Univ., Cleveland, OH (United States); De La Salle University (Philippines)
University of the Philippines Diliman (Philippines)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences; Univ. of Tennessee, Knoxville, TN (United States)
Case Western Reserve Univ., Cleveland, OH (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences; Univ. of Tennessee, Knoxville, TN (United States)

Additive manufacturing, or simply 3D printing (3DP), where objects are built through layer-wise material deposition, has gained significant academic and industrial attention as a result of the development of advanced and functional materials requiring rapid, customized, and flexible solutions. In the context of green manufacturing, diversifying environmentally and economically sustainable material portfolios is an essential endeavor for the success of 3DP technology that uses widely available, highly valuable, and renewable materials. Here, we used stereolithography (SLA) for processing methacrylate-based photocurable resins containing crab shell-derived chitin nanowhiskers (CNWs), which are surface-functionalized by reactive acrylate groups. Results from full spectral, thermal, structural, and topological analyses corroborate not only the surface functionalization of CNWs but also indicate the presence of these photocurable CNW (pCNW) fillers in the 3D-printed nanocomposites. Owing to the strong interfacial bond induced by the physical and chemical crosslinking between the pCNW and methacrylate (MA) polymer matrix, the internally formulated nanocomposites displayed enhanced thermomechanical properties (e.g., storage modulus and glass transition temperature) compared to those of commercially available pure SLA resins. For instance, the inclusion of 0.5 wt % pCNW improved the tensile strength and stiffness to up to 78 and 71%, respectively, without compromising the toughness and ductility of the printed material. Accordingly, this result also evidences the compatibility between the filler and resin materials. Consequently, the formation of a crosslinked network in the nanocomposite structure results in a higher thermal stability and activation energy (i.e., up to ~79%) for all the hybrid materials than the pristine MA. Finally, the high-resolution SLA print features, dimensional accuracy, and enhanced mechanical performance of our microstructure-forming functionalized chitin-based nanocomposites make them promising materials for a wide range of robust and high-performance industrial applications.

View Accepted Manuscript (DOE)

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); Philippine Department of Science and Technology (DOST) for RDM; Case Western Reserve University

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1887654

Journal Information:: ACS Applied Polymer Materials, Journal Name: ACS Applied Polymer Materials Journal Issue: 4 Vol. 4; ISSN 2637-6105

Publisher:: ACS PublicationsCopyright Statement

Country of Publication:: United States

Language:: English

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